The finished product is manufactured using a typical wet granulation method as follows: bosentan monohydrate, maize starch, pregelatinised starch, sodium starch glycollate, and povidone are dry blended, purified water is sprayed on the blend, and the mixture is kneaded to granules in a high shear granulator. The granules are then dried (fluid bed), sieved, mixed with glycerol dibehenate and magnesium stearate, and compressed to tablets and coated. The applicant commits to perform process validation on the first commercial batches produced. Reference is also made to the batch analysis certificates presented for 3 pilot batches.